r0 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000001640), 0x20001, 0x0)
write$tun(r0, &(0x7f0000001680)={@val, @void, @ipv6=@gre_packet={0x0, 0x6, "bad007", 0x78, 0x2f, 0x0, @private0, @remote, {[], {{}, {}, {}, {}, {}, {0x8, 0x6558, 0x0, "129a02c50a2d01d778b7cdbcca5c22fc44d6f1b346ea25dbfbd71f7244427e3df648d160dd3e3650bce90bc48191a4e6d191e5f3"}}}}}, 0xa4)