r0 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x21, &(0x7f0000000000)=0x6, 0x4)
sendmmsg$inet6(r0, &(0x7f00000050c0)=[{{&(0x7f0000000180)={0xa, 0x4e24, 0xcc7a, @loopback}, 0x1c, 0x0, 0x0, &(0x7f00000018c0)=[@hopopts={{0x18}}, @hopopts={{0x18}}], 0x30}}], 0x1, 0x0)