<--- вот тут возникает задержка в несколько секунд
Trying 192.168.1.1...
Connected to 192.168.1.1.
username:
admin@linux-tlpp:~> cat /proc/version
Linux version 4.12.14-lp151.28.7-default gcc version 7.4.0 (SUSE Linux)
admin@linux-tlpp:~> time telnet 127.0.0.1
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
real 0m5,068s
user 0m0,002s
sys 0m0,000s