=== 처방 검증: 두 노드에 conntrack 을 깐다 ===
--- kc-lab-1 ---
Setting up conntrack (1:1.4.7-1+b2) ...
Processing triggers for man-db (2.11.2-2) ...
tcp      6 86398 ESTABLISHED src=10.42.0.13 dst=10.42.1.7 sport=59725 dport=7800 src=10.42.1.7 dst=10.42.0.13 sport=7800 dport=59725 [ASSURED] mark=0 use=1
tcp      6 85885 ESTABLISHED src=10.42.0.13 dst=10.42.1.7 sport=38439 dport=57800 src=10.42.1.7 dst=10.42.0.13 sport=57800 dport=38439 [ASSURED] mark=0 use=1
--- kc-lab-2 ---
Setting up conntrack (1:1.4.7-1+b2) ...
Processing triggers for man-db (2.11.2-2) ...
tcp      6 86397 ESTABLISHED src=10.42.0.13 dst=10.42.1.7 sport=59725 dport=7800 src=10.42.1.7 dst=10.42.0.13 sport=7800 dport=59725 [ASSURED] mark=0 use=1
tcp      6 85884 ESTABLISHED src=10.42.0.13 dst=10.42.1.7 sport=38439 dport=57800 src=10.42.1.7 dst=10.42.0.13 sport=57800 dport=38439 [ASSURED] mark=0 use=1