prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x0, &(0x7f0000000000))
r0 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_IPV6_PKTINFO(r0, 0x29, 0x32, &(0x7f0000000040)={@loopback}, 0x14)