How to get rid of telnet connection delay?

Question

telnet

When trying to connect to something after
[email protected]:~> telnet 192.168.1.1
<--- there is a delay of a few seconds
Trying 192.168.1.1...
Connected to 192.168.1.1.
username:
[email protected]:~> cat /proc/version
Linux version 4.12.14-lp151.28.7-default gcc version 7.4.0 (SUSE Linux)
[email protected]:~> 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
[email protected]:~> cat /etc/nsswitch.conf
passwd: compat
group: compat
shadow :compat
hosts:dns files
networks: files dns
services: files
protocols: files
rpc: files
ethers: files
netmasks: files
netgroup: files nis
publickey: files
bootparams: files
automount: files nis
aliases: files
[email protected]:~> cat /etc/resolv. conf
nameserver 10.10.0.111
nameserver 10.10.2.20
nameserver 8.8.8.8

Answer 1

there is no delay under sudo