SYZFAIL: failed to send rpc

FreeBSD/amd64 (ci-freebsd-main-7.us-central1-b.c.syzkaller.internal) (ttyu0)

fd=3 want=75184 sent=0 n=-1 (errno 32: Broken pipe)
login: if_delmulti_locked: detaching ifnet instance 0xfffffe00586a6800
if_delmulti_locked: detaching ifnet instance 0xfffffe00586a6800
if_delmulti_locked: detaching ifnet instance 0xfffffe00586a6800