r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000001a80)={0xa, 0x0, 0x0, @loopback}, 0x1c)
sendmmsg$inet6(r0, &(0x7f00000049c0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, &(0x7f0000001440)=[{&(0x7f0000000180)='s', 0xffd0}], 0x1}}, {{0x0, 0x0, &(0x7f0000001980)=[{&(0x7f0000001580)=':', 0x1}], 0x1}}], 0x3, 0x20008001)