r0 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x21, &(0x7f0000000000)=0x6, 0x4)
sendmsg$inet6(r0, &(0x7f0000000200)={&(0x7f00000000c0)={0xa, 0x4e20, 0x0, @empty}, 0x1c, 0x0}, 0x0)