r0 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_buf(r0, 0x29, 0x21, &(0x7f0000000000)="92f46193", 0x4)
sendmmsg$inet6(r0, &(0x7f0000000880)=[{{&(0x7f0000000040)={0xa, 0x4e21, 0x0, @local}, 0x1c, 0x0}}, {{&(0x7f0000000080)={0xa, 0x4e23, 0x9c9, @initdev={0xfe, 0x88, '\x00', 0x0, 0x0}}, 0x1c, 0x0}}], 0x2, 0x0)