r0 = socket$inet6_udp(0xa, 0x2, 0x0)
recvmmsg(0xffffffffffffffff, &(0x7f00000063c0)=[{{0x0, 0x0, 0x0}, 0x4}, {{0x0, 0x0, &(0x7f00000062c0)=[{0x0}, {&(0x7f0000006180)=""/79, 0x4f}], 0x2}}], 0x2, 0x0, 0x0)
connect$inet6(r0, &(0x7f0000000600)={0xa, 0x0, 0x0, @dev, 0x1}, 0x1c)
connect$inet6(r0, &(0x7f00000000c0)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @multicast1}}, 0x1c)
setsockopt$inet6_IPV6_ADDRFORM(r0, 0x29, 0x1, &(0x7f0000000040), 0x4)
setsockopt$inet6_udp_int(r0, 0x11, 0x1, &(0x7f0000000000)=0x8, 0x4)
sendmmsg$inet6(r0, &(0x7f0000004d00)=[{{0x0, 0x0, &(0x7f00000004c0)=[{&(0x7f0000000080)='K', 0x1}], 0x1}}], 0x7ffff000, 0x0)