Symbol: set_tcp_maxseg
usr.bin/dig/lib/isc/unix/socket.c
1296
set_tcp_maxseg(sock, 1280 - 20 - 40); /* 1280 - TCP - IPV6 */
usr.sbin/nsd/server.c
1406
set_tcp_maxseg(sock, nsd->tcp_mss);