Ninjastic
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Board Altcoin Discussion
Re: Problem with block sync. Help please!
by
maksymsh
on 24/01/2018, 18:00:48 UTC
I have 2 VPS with nodes

VPS1 85.25.119.154
VPS2 94.130.236.187

And LOCAL PC with dynamic IP. Currently its 94.231.68.146.

Ping results:

1) Ping from VPS1 to VPS2 - OK

Code:
triton746:~# ping 94.130.236.187
PING 94.130.236.187 (94.130.236.187) 56(84) bytes of data.
64 bytes from 94.130.236.187: icmp_seq=1 ttl=57 time=8.42 ms
64 bytes from 94.130.236.187: icmp_seq=2 ttl=57 time=8.39 ms
64 bytes from 94.130.236.187: icmp_seq=3 ttl=57 time=8.39 ms
64 bytes from 94.130.236.187: icmp_seq=4 ttl=57 time=8.42 ms
64 bytes from 94.130.236.187: icmp_seq=5 ttl=57 time=8.43 ms
64 bytes from 94.130.236.187: icmp_seq=6 ttl=57 time=8.44 ms
64 bytes from 94.130.236.187: icmp_seq=7 ttl=57 time=8.39 ms
64 bytes from 94.130.236.187: icmp_seq=8 ttl=57 time=8.38 ms
64 bytes from 94.130.236.187: icmp_seq=9 ttl=57 time=8.44 ms
64 bytes from 94.130.236.187: icmp_seq=10 ttl=57 time=8.39 ms
--- 94.130.236.187 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9014ms
rtt min/avg/max/mdev = 8.382/8.413/8.447/0.047 ms

2) Ping from VPS2 to VPS1 - OK

Code:

root@Ubuntu-1604-xenial-64-minimal ~/.coinbit # ping 85.25.119.154
PING 85.25.119.154 (85.25.119.154) 56(84) bytes of data.
64 bytes from 85.25.119.154: icmp_seq=1 ttl=56 time=8.34 ms
64 bytes from 85.25.119.154: icmp_seq=2 ttl=56 time=8.38 ms
64 bytes from 85.25.119.154: icmp_seq=3 ttl=56 time=8.38 ms
64 bytes from 85.25.119.154: icmp_seq=4 ttl=56 time=8.37 ms
64 bytes from 85.25.119.154: icmp_seq=5 ttl=56 time=8.38 ms
64 bytes from 85.25.119.154: icmp_seq=6 ttl=56 time=8.41 ms
64 bytes from 85.25.119.154: icmp_seq=7 ttl=56 time=8.42 ms
64 bytes from 85.25.119.154: icmp_seq=8 ttl=56 time=8.38 ms
64 bytes from 85.25.119.154: icmp_seq=9 ttl=56 time=8.40 ms
64 bytes from 85.25.119.154: icmp_seq=10 ttl=56 time=8.37 ms
--- 85.25.119.154 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9012ms
rtt min/avg/max/mdev = 8.343/8.386/8.420/0.093 ms


3) Ping from LOCAL to VPS1 - OK

Code:
ping 85.25.119.154
PING 85.25.119.154 (85.25.119.154) 56(84) bytes of data.
64 bytes from 85.25.119.154: icmp_seq=1 ttl=57 time=41.9 ms
64 bytes from 85.25.119.154: icmp_seq=2 ttl=57 time=38.5 ms
64 bytes from 85.25.119.154: icmp_seq=3 ttl=57 time=42.8 ms
64 bytes from 85.25.119.154: icmp_seq=4 ttl=57 time=41.9 ms
64 bytes from 85.25.119.154: icmp_seq=5 ttl=57 time=43.7 ms
64 bytes from 85.25.119.154: icmp_seq=6 ttl=57 time=46.4 ms
64 bytes from 85.25.119.154: icmp_seq=7 ttl=57 time=45.9 ms
64 bytes from 85.25.119.154: icmp_seq=8 ttl=57 time=43.7 ms
64 bytes from 85.25.119.154: icmp_seq=9 ttl=57 time=46.4 ms
64 bytes from 85.25.119.154: icmp_seq=10 ttl=57 time=40.8 ms
--- 85.25.119.154 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9010ms
rtt min/avg/max/mdev = 38.516/43.251/46.474/2.445 ms

4) Ping from LOCAL to VPS2 - OK

Code:

ping 94.231.68.146
PING 94.231.68.146 (94.231.68.146) 56(84) bytes of data.
64 bytes from 94.231.68.146: icmp_seq=1 ttl=64 time=0.908 ms
64 bytes from 94.231.68.146: icmp_seq=2 ttl=64 time=1.37 ms
64 bytes from 94.231.68.146: icmp_seq=3 ttl=64 time=0.948 ms
64 bytes from 94.231.68.146: icmp_seq=4 ttl=64 time=0.846 ms
64 bytes from 94.231.68.146: icmp_seq=5 ttl=64 time=38.2 ms
64 bytes from 94.231.68.146: icmp_seq=6 ttl=64 time=0.864 ms
64 bytes from 94.231.68.146: icmp_seq=7 ttl=64 time=0.944 ms
64 bytes from 94.231.68.146: icmp_seq=8 ttl=64 time=0.882 ms
64 bytes from 94.231.68.146: icmp_seq=9 ttl=64 time=0.950 ms
64 bytes from 94.231.68.146: icmp_seq=10 ttl=64 time=0.924 ms
64 bytes from 94.231.68.146: icmp_seq=11 ttl=64 time=0.872 ms
64 bytes from 94.231.68.146: icmp_seq=12 ttl=64 time=2.03 ms
64 bytes from 94.231.68.146: icmp_seq=13 ttl=64 time=0.851 ms
64 bytes from 94.231.68.146: icmp_seq=14 ttl=64 time=0.944 ms
^C
--- 94.231.68.146 ping statistics ---
14 packets transmitted, 14 received, 0% packet loss, time 13074ms
rtt min/avg/max/mdev = 0.846/3.682/38.204/9.579 ms

5) Ping from VPS1 to LOCAL - Error

Code:
triton746:~# ping 94.231.68.146
PING 94.231.68.146 (94.231.68.146) 56(84) bytes of data.
--- 94.231.68.146 ping statistics ---
10 packets transmitted, 0 received, 100% packet loss, time 9072ms



6) Ping from VPS2 to LOCAL - Error

Code:
root@Ubuntu-1604-xenial-64-minimal ~/.coinbit # ping 94.231.68.146
PING 94.231.68.146 (94.231.68.146) 56(84) bytes of data.
--- 94.231.68.146 ping statistics ---
10 packets transmitted, 0 received, 100% packet loss, time 9210ms


7) Ping from Local to 94.231.68.146 - OK

Code:
ping 94.231.68.146
PING 94.231.68.146 (94.231.68.146) 56(84) bytes of data.
64 bytes from 94.231.68.146: icmp_seq=1 ttl=64 time=1.12 ms
64 bytes from 94.231.68.146: icmp_seq=2 ttl=64 time=0.843 ms
64 bytes from 94.231.68.146: icmp_seq=3 ttl=64 time=0.882 ms
64 bytes from 94.231.68.146: icmp_seq=4 ttl=64 time=0.952 ms
64 bytes from 94.231.68.146: icmp_seq=5 ttl=64 time=0.914 ms
64 bytes from 94.231.68.146: icmp_seq=6 ttl=64 time=0.811 ms
64 bytes from 94.231.68.146: icmp_seq=7 ttl=64 time=0.849 ms
64 bytes from 94.231.68.146: icmp_seq=8 ttl=64 time=0.887 ms
64 bytes from 94.231.68.146: icmp_seq=9 ttl=64 time=0.910 ms
64 bytes from 94.231.68.146: icmp_seq=10 ttl=64 time=1.06 ms
--- 94.231.68.146 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9083ms
rtt min/avg/max/mdev = 0.811/0.923/1.122/0.095 ms



Next we will listen requests on rpc port 9444 :

VPS1
Code:
triton746:~# tcpdump port 9444 and '(tcp-syn|tcp-ack)!=0'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on enp2s0, link-type EN10MB (Ethernet), capture size 262144 bytes
19:13:24.146918 IP static.187.236.130.94.clients.your-server.de.9444 > triton746.hostiq.ua.54854: Flags [P.], seq 1209101586:1209101618, ack 537668388, win 240, options [nop,nop,TS val 4230430442 ecr 113821175], length 32
19:13:24.147244 IP triton746.hostiq.ua.54854 > static.187.236.130.94.clients.your-server.de.9444: Flags [P.], seq 1:33, ack 32, win 250, options [nop,nop,TS val 113851181 ecr 4230430442], length 32
19:13:24.147362 IP triton746.hostiq.ua.54854 > static.187.236.130.94.clients.your-server.de.9444: Flags [P.], seq 33:65, ack 32, win 250, options [nop,nop,TS val 113851181 ecr 4230430442], length 32
19:13:24.155681 IP static.187.236.130.94.clients.your-server.de.9444 > triton746.hostiq.ua.54854: Flags [.], ack 33, win 240, options [nop,nop,TS val 4230430451 ecr 113851181], length 0
19:13:24.155708 IP static.187.236.130.94.clients.your-server.de.9444 > triton746.hostiq.ua.54854: Flags [.], ack 65, win 240, options [nop,nop,TS val 4230430451 ecr 113851181], length 0
19:13:24.155798 IP static.187.236.130.94.clients.your-server.de.9444 > triton746.hostiq.ua.54854: Flags [P.], seq 32:64, ack 65, win 240, options [nop,nop,TS val 4230430451 ecr 113851181], length 32
19:13:24.193808 IP triton746.hostiq.ua.54854 > static.187.236.130.94.clients.your-server.de.9444: Flags [.], ack 64, win 250, options [nop,nop,TS val 113851193 ecr 4230430451], length 0
19:13:45.667604 IP pppoe.lvivlan.net.ua.36954 > triton746.hostiq.ua.9444: Flags [F.], seq 3429690245, ack 2677835407, win 229, options [nop,nop,TS val 2048434459 ecr 113837619], length 0
19:13:45.667784 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.36954: Flags [F.], seq 1, ack 1, win 227, options [nop,nop,TS val 113856561 ecr 2048434459], length 0
19:13:45.707913 IP pppoe.lvivlan.net.ua.36954 > triton746.hostiq.ua.9444: Flags [.], ack 2, win 229, options [nop,nop,TS val 2048434500 ecr 113856561], length 0
19:13:59.006428 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [S], seq 2641790739, win 29200, options [mss 1452,sackOK,TS val 2048447798 ecr 0,nop,wscale 7], length 0
19:13:59.006468 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [S.], seq 3190066764, ack 2641790740, win 28960, options [mss 1460,sackOK,TS val 113859896 ecr 2048447798,nop,wscale 7], length 0
19:13:59.057026 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [.], ack 1, win 229, options [nop,nop,TS val 2048447848 ecr 113859896], length 0
19:13:59.057626 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [P.], seq 1:127, ack 1, win 229, options [nop,nop,TS val 2048447849 ecr 113859896], length 126
19:13:59.057639 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [.], ack 127, win 227, options [nop,nop,TS val 113859908 ecr 2048447849], length 0
19:13:59.058022 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [P.], seq 1:127, ack 127, win 227, options [nop,nop,TS val 113859909 ecr 2048447849], length 126
19:13:59.058191 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [P.], seq 127:151, ack 127, win 227, options [nop,nop,TS val 113859909 ecr 2048447849], length 24
19:13:59.058365 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [P.], seq 151:183, ack 127, win 227, options [nop,nop,TS val 113859909 ecr 2048447849], length 32
19:13:59.104120 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [.], ack 127, win 229, options [nop,nop,TS val 2048447895 ecr 113859909], length 0
19:13:59.104385 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [.], ack 151, win 229, options [nop,nop,TS val 2048447895 ecr 113859909], length 0
19:13:59.104717 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [P.], seq 127:151, ack 151, win 229, options [nop,nop,TS val 2048447895 ecr 113859909], length 24
19:13:59.104884 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [P.], seq 183:207, ack 151, win 227, options [nop,nop,TS val 113859920 ecr 2048447895], length 24
19:13:59.107588 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [P.], seq 151:263, ack 183, win 229, options [nop,nop,TS val 2048447899 ecr 113859909], length 112
19:13:59.107870 IP triton746.hostiq.ua.9444 > pppoe.lvivlan.net.ua.37004: Flags [P.], seq 207:239, ack 263, win 227, options [nop,nop,TS val 113859921 ecr 2048447899], length 32
19:13:59.151313 IP pppoe.lvivlan.net.ua.37004 > triton746.hostiq.ua.9444: Flags [.], ack 239, win 229, options [nop,nop,TS val 2048447943 ecr 113859920], length 0
^C
25 packets captured
25 packets received by filter
0 packets dropped by kernel


VPS2
Code:
root@Ubuntu-1604-xenial-64-minimal ~ # tcpdump port 9444 and '(tcp-syn|tcp-ack)!=0'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
19:13:24.140416 IP Ubuntu-1604-xenial-64-minimal.9444 > triton746.dedicatedpanel.com.54854: Flags [P.], seq 1209101586:1209101618, ack 537668388, win 240, options [nop,nop,TS val 4230430442 ecr 113821175], length 32
19:13:24.149205 IP triton746.dedicatedpanel.com.54854 > Ubuntu-1604-xenial-64-minimal.9444: Flags [P.], seq 1:33, ack 32, win 250, options [nop,nop,TS val 113851181 ecr 4230430442], length 32
19:13:24.149229 IP Ubuntu-1604-xenial-64-minimal.9444 > triton746.dedicatedpanel.com.54854: Flags [.], ack 33, win 240, options [nop,nop,TS val 4230430451 ecr 113851181], length 0
19:13:24.149254 IP triton746.dedicatedpanel.com.54854 > Ubuntu-1604-xenial-64-minimal.9444: Flags [P.], seq 33:65, ack 32, win 250, options [nop,nop,TS val 113851181 ecr 4230430442], length 32
19:13:24.149260 IP Ubuntu-1604-xenial-64-minimal.9444 > triton746.dedicatedpanel.com.54854: Flags [.], ack 65, win 240, options [nop,nop,TS val 4230430451 ecr 113851181], length 0
19:13:24.149405 IP Ubuntu-1604-xenial-64-minimal.9444 > triton746.dedicatedpanel.com.54854: Flags [P.], seq 32:64, ack 65, win 240, options [nop,nop,TS val 4230430451 ecr 113851181], length 32
19:13:24.195761 IP triton746.dedicatedpanel.com.54854 > Ubuntu-1604-xenial-64-minimal.9444: Flags [.], ack 64, win 250, options [nop,nop,TS val 113851193 ecr 4230430451], length 0
19:13:45.663992 IP pppoe.lvivlan.net.ua.38444 > Ubuntu-1604-xenial-64-minimal.9444: Flags [F.], seq 1062401278, ack 3660925363, win 229, options [nop,nop,TS val 4001573094 ecr 314325229], length 0
19:13:45.664075 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38444: Flags [F.], seq 1, ack 1, win 235, options [nop,nop,TS val 314401629 ecr 4001573094], length 0
19:13:45.705420 IP pppoe.lvivlan.net.ua.38444 > Ubuntu-1604-xenial-64-minimal.9444: Flags [.], ack 2, win 229, options [nop,nop,TS val 4001573136 ecr 314401629], length 0
19:13:58.456773 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [S], seq 300531225, win 29200, options [mss 1452,sackOK,TS val 4001585887 ecr 0,nop,wscale 7], length 0
19:13:58.456799 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [S.], seq 4276075128, ack 300531226, win 28960, options [mss 1460,sackOK,TS val 314414421 ecr 4001585887,nop,wscale 7], length 0
19:13:58.501648 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [.], ack 1, win 229, options [nop,nop,TS val 4001585932 ecr 314414421], length 0
19:13:58.502306 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [P.], seq 1:127, ack 1, win 229, options [nop,nop,TS val 4001585933 ecr 314414421], length 126
19:13:58.502325 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [.], ack 127, win 227, options [nop,nop,TS val 314414467 ecr 4001585933], length 0
19:13:58.502523 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [P.], seq 1:127, ack 127, win 227, options [nop,nop,TS val 314414467 ecr 4001585933], length 126
19:13:58.502547 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [P.], seq 127:151, ack 127, win 227, options [nop,nop,TS val 314414467 ecr 4001585933], length 24
19:13:58.502688 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [P.], seq 151:183, ack 127, win 227, options [nop,nop,TS val 314414467 ecr 4001585933], length 32
19:13:58.554172 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [.], ack 127, win 229, options [nop,nop,TS val 4001585976 ecr 314414467], length 0
19:13:58.554295 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [P.], seq 127:151, ack 127, win 229, options [nop,nop,TS val 4001585976 ecr 314414467], length 24
19:13:58.554432 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [P.], seq 183:207, ack 151, win 227, options [nop,nop,TS val 314414519 ecr 4001585976], length 24
19:13:58.555013 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [.], ack 183, win 229, options [nop,nop,TS val 4001585978 ecr 314414467], length 0
19:13:58.556530 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [P.], seq 151:356, ack 183, win 229, options [nop,nop,TS val 4001585987 ecr 314414467], length 205
19:13:58.556724 IP Ubuntu-1604-xenial-64-minimal.9444 > pppoe.lvivlan.net.ua.38494: Flags [P.], seq 207:239, ack 356, win 235, options [nop,nop,TS val 314414521 ecr 4001585987], length 32
19:13:58.598720 IP pppoe.lvivlan.net.ua.38494 > Ubuntu-1604-xenial-64-minimal.9444: Flags [.], ack 239, win 229, options [nop,nop,TS val 4001586029 ecr 314414519], length 0
^C
25 packets captured
25 packets received by filter
0 packets dropped by kernel


LOCAL
Code:
tcpdump port 9444 and '(tcp-syn|tcp-ack)!=0'
[sudo] password for max:
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wlp3s0, link-type EN10MB (Ethernet), capture size 262144 bytes
20:08:29.153560 IP max-Lenovo-G500.Dlink.38444 > static.187.236.130.94.clients.your-server.de.9444: Flags [P.], seq 1062401086:1062401118, ack 3660925171, win 229, options [nop,nop,TS val 4001256605 ecr 313965144], length 32
20:08:29.185004 IP static.187.236.130.94.clients.your-server.de.9444 > max-Lenovo-G500.Dlink.38444: Flags [P.], seq 1:33, ack 0, win 235, options [nop,nop,TS val 314085134 ecr 4001136598], length 32
20:08:29.185218 IP max-Lenovo-G500.Dlink.38444 > static.187.236.130.94.clients.your-server.de.9444: Flags [P.], seq 32:64, ack 33, win 229, options [nop,nop,TS val 4001256636 ecr 314085134], length 32
20:08:29.196239 IP static.187.236.130.94.clients.your-server.de.9444 > max-Lenovo-G500.Dlink.38444: Flags [P.], seq 33:65, ack 32, win 235, options [nop,nop,TS val 314085146 ecr 4001256605], length 32
20:08:29.238164 IP max-Lenovo-G500.Dlink.38444 > static.187.236.130.94.clients.your-server.de.9444: Flags [.], ack 65, win 229, options [nop,nop,TS val 4001256647 ecr 314085146], length 0
20:08:29.343998 IP static.187.236.130.94.clients.your-server.de.9444 > max-Lenovo-G500.Dlink.38444: Flags [.], ack 64, win 235, options [nop,nop,TS val 314085230 ecr 4001256636], length 0
20:08:29.697114 IP max-Lenovo-G500.Dlink.36954 > triton746.dedicatedpanel.com.9444: Flags [P.], seq 3429690053:3429690085, ack 2677835215, win 229, options [nop,nop,TS val 2048118513 ecr 113747558], length 32
20:08:29.698245 IP triton746.dedicatedpanel.com.9444 > max-Lenovo-G500.Dlink.36954: Flags [P.], seq 1:33, ack 0, win 227, options [nop,nop,TS val 113777563 ecr 2047998499], length 32
20:08:29.698386 IP max-Lenovo-G500.Dlink.36954 > triton746.dedicatedpanel.com.9444: Flags [P.], seq 32:64, ack 33, win 229, options [nop,nop,TS val 2048118514 ecr 113777563], length 32
20:08:29.740845 IP triton746.dedicatedpanel.com.9444 > max-Lenovo-G500.Dlink.36954: Flags [P.], seq 33:65, ack 32, win 227, options [nop,nop,TS val 113777573 ecr 2048118513], length 32
20:08:29.781488 IP triton746.dedicatedpanel.com.9444 > max-Lenovo-G500.Dlink.36954: Flags [.], ack 64, win 227, options [nop,nop,TS val 113777584 ecr 2048118514], length 0
20:08:29.782154 IP max-Lenovo-G500.Dlink.36954 > triton746.dedicatedpanel.com.9444: Flags [.], ack 65, win 229, options [nop,nop,TS val 2048118598 ecr 113777573], length 0