iptables rules added by agent may block access to NordVPN

[a-martynovich]

1. run agent, no claiming required
2. try
   ping fi86.nordvpn.com - will print sendmsg: Operation Not Permitted
wget fi86.nordvpn.com - will timeout
   logs:

[  ...] DROP: IN= OUT=enp0s31f6 SRC=10.x.x.x DST=196.196.203.59 LEN=84 TOS=0x00 PREC=0x00 TTL=64 ID=53655 DF PROTO=ICMP TYPE=8 CODE=0 ID=5471 SEQ=1

3. run iptables -F INPUT; iptables -F OUTPUT
4. repeat commands from 2. They should all succeed.

[a-martynovich]

For some reason 196.196.0.0/16 is listed in spam block list
https://www.spamhaus.org/sbl/query/SBL175056

However NordVPN uses the same network for proxies in Finland, Estonia and Sweden.