also in the manual to antminer s1 says that

Note:
1.
WAN
and LAN can’t be at the same network segment. Please set WAN to DHCP
client or
different network segment with WAN. The LAN of new version of antMiner will be set to
DHCP by default.
2.
If you set fixed IP to WAN interface, please remember it, otherwise you may
not access the
antminer

My lan is on DHCP
and wan on static

how can i know if they are on different network segments?