trace.txt

[pid  7604] [00000000006aa98f] accept(21, NULL, NULL) = 94
[pid  7604] [00000000006a821f] ioctl(94, FIONBIO, [1]) = 0
[pid  7604] [00000000006aa98f] accept(21, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7604] [00000000006aa4ce] epoll_ctl(22, EPOLL_CTL_ADD, 94, {EPOLLIN|EPOLLOUT|EPOLLET, {u32=2415928312, u64=140499386115064}}) = 0
[pid  7604] [00000000006aabbe] recvfrom(94, "w\1", 2, 0, NULL, NULL) = 2
[pid  7604] [00000000006aabbe] recvfrom(94, "\0", 1, 0, NULL, NULL) = 1
[pid  7604] [00000000006aadfe] sendto(94, "\5\0", 2, 0, NULL, 0) = 2
[pid  7604] [00000000006aabbe] recvfrom(94, 0x7fc8a6570c10, 4, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7604] [00000000006aabbe] recvfrom(94, 0x7fc8a6570c10, 4, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7604] [00000000006aabbe] recvfrom(94, "\5\1\0\3", 4, 0, NULL, NULL) = 4
[pid  7604] [00000000006aabbe] recvfrom(94, "\5", 1, 0, NULL, NULL) = 1
[pid  7604] [00000000006aabbe] recvfrom(94, "ip.me\1\273", 7, 0, NULL, NULL) = 7
[pid  7601] [00000000006ab03b] socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, IPPROTO_IP) = 95
[pid  7601] [00000000006aafce] setsockopt(95, SOL_IP, IP_RECVERR, [1], 4) = 0
[pid  7601] [00000000006aaa5b] connect(95, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("1.1.1.1")}, 16) = 0
[pid  7601] [00000000006aadfe] sendto(95, "\326\274\1\0\0\1\0\0\0\0\0\0\2ip\2me\0\0\1\0\1", 23, MSG_NOSIGNAL, NULL, 0) = 23
[pid  7601] [00000000006a821f] ioctl(95, FIONREAD, [39]) = 0
[pid  7601] [00000000006aac84] recvfrom(95, "\326\274\201\200\0\1\0\1\0\0\0\0\2ip\2me\0\0\1\0\1\300\f\0\1\0\1\0\0\37"..., 1024, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("1.1.1.1")}, [28->16]) = 39
[pid  7604] [00000000006ab03b] socket(AF_INET6, SOCK_STREAM, IPPROTO_IP) = 95
[pid  7604] [00000000006a821f] ioctl(95, FIONBIO, [1]) = 0
[pid  7604] [00000000006aa4ce] epoll_ctl(22, EPOLL_CTL_ADD, 95, {EPOLLIN|EPOLLOUT|EPOLLET, {u32=2415928312, u64=140499386115064}}) = 0