2018-11-06 17:21:11 received: headers (164003 bytes) peer=331
2018-11-06 17:21:11 headers[0].hashPrevBlock: d0842ddc706cae4bc48ae461d0d6a5f5a2e1a7ad2e59b559104a21ac23f9867a npindexBestHeader->nHeight: 418534
2018-11-06 17:21:11 Received non full headers. bnPrimeChainMultiplier == 0. Possibly an old client.
2018-11-06 17:21:11 more getheaders (404138) to end to peer=331 (startheight:409148)
2018-11-06 17:21:11 sending getheaders (997 bytes) peer=331
2018-11-06 17:21:11 fCanDirectFetch=1 pindexLast->IsValid(BLOCK_VALID_TREE)=1 chainActive.Tip()->nChainWork=0000000000000000000000000000000000000000000000000001beed3beaccff pindexLast->nChainWork=0000000000000000000000000000000000000000000000000001beed3b5a87ce
2018-11-06 17:21:11 received: getdata (18003 bytes) peer=331
2018-11-06 17:21:11 received getdata (500 invsz) peer=331
2018-11-06 17:21:11 received getdata for: block 1dd0bf3866d04aca245a430cf6a1492df99ad873405bd4a62ff18ccc1ed00112 peer=331
I get this on my testnet dubug.
I using DatacoinCore.Veter:0.15.99.8