fix: correct formatting and improve clarity in documentation and test descriptions

tests/integration/test_private_ports.py

@@ -2,8 +2,8 @@
 
 Run: UVM_FIREWALL_INTEGRATION=1 python3 -B -m unittest discover -s tests/integration -v
 
-Needs Linux, nft, iptables, ip, bridge, conntrack, sysctl and permission to create network
-namespaces (root, or unprivileged user namespaces). No sudo, installation,
+Needs Linux, nft, iptables, ip, bridge, conntrack, sysctl and permission to create
+network namespaces (root, or unprivileged user namespaces). No sudo, installation,
 /run/netns mounts, host firewall changes or br_netfilter sysctls are used.
 Bridge-connected veths stand in for guest TAPs. A third namespace with two
 uplinks tests NAT, offline startup, reconnects and host route changes without
@@ -380,7 +380,7 @@ def _sandbox(parent_fd):
             guest.request("udp_bind", name=label, ip=vm.guest_ip, port=0)
             guest.request("udp_send", name=label, ip=internet_ip, port=53, data=label)
             query = outside.request("udp_recv", name="internet-dns")
-            assert query == [label, [source, query[1][1]]], query
+            assert query[0] == label and query[1][0] == source, query
             outside.request("udp_send", name="internet-dns", ip=source, port=query[1][1], data="dns-reply")
             assert guest.request("udp_recv", name=label)[0] == "dns-reply"