r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000540)={0xa, 0x0, 0x0, @dev, 0x2}, 0x1c)
setsockopt$inet6_mtu(r0, 0x29, 0x17, &(0x7f0000000000)=0x3, 0x4)
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x9)
sendmmsg$inet6(r0, &(0x7f0000004d00), 0x2f, 0x0)