r0 = socket$inet6_udp(0xa, 0x2, 0x0) sendmmsg$inet6(r0, &(0x7f0000005980)=[{{&(0x7f0000001b40)={0xa, 0x4e21, 0x0, @ipv4={'\x00', '\xff\xff', @remote}}, 0x1c, &(0x7f0000002d80)=[{&(0x7f0000001b80)="af", 0x1}], 0x1, &(0x7f0000002e00)=[@hopopts_2292={{0x18}}], 0x18}}], 0x1, 0x4010)