strace

gistfile1.txt

socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 6

socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, IPPROTO_IP) = 6

connect(6, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.1.0.2")}, 16) = 0

sendmmsg(6, [{msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="m\30\1\0\0\1\0\0\0\0\0\0\20EC2_PUBLIC_DNS_HERE\teu"..., iov_len=66}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=66}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\301\"\1\0\0\1\0\0\0\0\0\0\20EC2_PUBLIC_DNS_HERE\teu"..., iov_len=66}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=66}], 2, MSG_NOSIGNAL) = 2

recvfrom(6, "m\30\201\200\0\1\0\1\0\0\0\0\20EC2_PUBLIC_DNS_HERE\teu"..., 2048, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.1.0.2")}, [28->16]) = 82

recvfrom(6, "\301\"\201\200\0\1\0\0\0\1\0\0\20EC2_PUBLIC_DNS_HERE\teu"..., 65536, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.1.0.2")}, [28->16]) = 150

socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 6

connect(6, {sa_family=AF_INET, sin_port=htons(6379), sin_addr=inet_addr("10.1.0.205")}, 16) = -1 EINPROGRESS (Operation now in progress)

/usr/bin/strace: Process 31 attached

[pid    31] socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, IPPROTO_IP) = 6

[pid    31] connect(6, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.1.0.2")}, 16) = 0

[pid    31] sendmmsg(6, [{msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\23\305\1\0\0\1\0\0\0\0\0\0\7o100521\6ingest\6sent"..., iov_len=42}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=42}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\34\334\1\0\0\1\0\0\0\0\0\0\7o100521\6ingest\6sent"..., iov_len=42}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=42}], 2, MSG_NOSIGNAL) = 2

[pid    31] recvfrom(6, "\34\334\201\200\0\1\0\0\0\1\0\0\7o100521\6ingest\6sent"..., 2048, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.1.0.2")}, [28->16]) = 135

[pid    31] recvfrom(6, "\23\305\201\200\0\1\0\1\0\0\0\0\7o100521\6ingest\6sent"..., 65536, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("10.1.0.2")}, [28->16]) = 58

[pid    31] +++ exited with 0 +++

socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) = 6

setsockopt(6, SOL_TCP, TCP_NODELAY, [1], 4) = 0

connect(6, {sa_family=AF_INET, sin_port=htons(443), sin_addr=inet_addr("SOME_IPV4_I_DONT_RECOGNIZE_AS_OUR_INFRASTRUCTURE")}, 16) = -1 EINPROGRESS (Operation now in progress)

getsockopt(6, SOL_SOCKET, SO_ERROR, [0], [4]) = 0

getpeername(6, {sa_family=AF_INET, sin_port=htons(443), sin_addr=inet_addr("SOME_IPV4_I_DONT_RECOGNIZE_AS_OUR_INFRASTRUCTURE")}, [128->16]) = 0

getsockname(6, {sa_family=AF_INET, sin_port=htons(54928), sin_addr=inet_addr("10.1.0.250")}, [128->16]) = 0

SOME_IPV4_I_DONT_RECOGNIZE_AS_OUR_INFRASTRUCTURE could be public IPv4 of ECS container, but I'm not sure