panic: tcp_default_fb_init: connection 0xfffffe0077d3e000 in unexpected state 10
cpuid = 1
time = 10
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe00572fe290
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe00572fe3f0
vpanic() at vpanic+0x257/frame 0xfffffe00572fe5b0
panic() at panic+0xb5/frame 0xfffffe00572fe680
tcp_default_fb_init() at tcp_default_fb_init+0x697/frame 0xfffffe00572fe6d0
tcp_ctloutput_set() at tcp_ctloutput_set+0x607/frame 0xfffffe00572fe850
tcp_ctloutput() at tcp_ctloutput+0x128/frame 0xfffffe00572fe950
sosetopt() at sosetopt+0x236/frame 0xfffffe00572feb50
kern_setsockopt() at kern_setsockopt+0x2b0/frame 0xfffffe00572fecc0
sys_setsockopt() at sys_setsockopt+0x77/frame 0xfffffe00572fed10
amd64_syscall() at amd64_syscall+0x4e2/frame 0xfffffe00572fef30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00572fef30
--- syscall (198, FreeBSD ELF64, __syscall), rip = 0x3a197a, rsp = 0x825b4cf08, rbp = 0x825b4cf80 ---
KDB: enter: panic
[ thread pid 1208 tid 100526 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25b9ce7(%rip)
db> 
db> set $lines = 0
db>