SYZFAIL: tun: can't open device
device=/dev/tap3 (errno 16: Device busy)


FreeBSD/amd64 (ci-freebsd-i386-2.c.syzkaller.internal) (ttyu0)

login: if_delmulti_locked: detaching ifnet instance 0xfffff8003c734800
if_delmulti_locked: detaching ifnet instance 0xfffff8003c734800
if_delmulti_locked: detaching ifnet instance 0xfffff8003c734800
if_delmulti_locked: detaching ifnet instance 0xfffff8003ca6e800
if_delmulti_locked: detaching ifnet instance 0xfffff8003ca6e800
if_delmulti_locked: detaching ifnet instance 0xfffff8003ca6e800
Jun 18 06:52:26 ci-freebsd-i386-2 syslogd: last message repeated 6 times
Jun 18 06:53:58 ci-freebsd-i386-2 dhclient[3207]: Interface tap1 is down, dhclient exiting
Jun 18 06:53:58 ci-freebsd-i386-2 dhclient[3207]: connection closed
Jun 18 06:53:58 ci-freebsd-i386-2 dhclient[3207]: exiting.