forked from arti/vt1200
tcp_output (tcp_output.c:46), tcp_template (tcp_subr.c:65), tcp_close (tcp_subr.c:244), tcp_timers/TCPT_2MSL (tcp_timer.c:144/158) and timeout (kern_clock.c:232) for the TCP side; ifa_ifwithaddr (if.c:141) for 0x3F61AB30; in_cksum (in_cksum.c:24, ADDCARRY at :20) for 0x3FB2C290; bcmp (bcmp.c:18) for 0x3F942230; the ntohl macro for 0x3FB2C000. Marked firmware-specific: 0x3F61B000 (lock wrapper), 0x3F61BFC0 (packet accessor), 0x3F60BD40 (queue post), 0x3FB2C140 (compare helper). Also: the 120 written at TIME_WAIT is 2 * TCPTV_MSL with PR_SLOWHZ=2 (tcp_timer.h:60, tcp_input.c:1068), so TCB+0x80 is t_timer[TCPT_2MSL].