EDICIóN GENERAL

Linux no es capaz de acceder a URLs con guion '-' en el nombre

Buf que chungo! Pero creo que ya encontré la razón: intentad hacerle un ping a uno.blogspot.com. Incluso entrecomillandolo no deja!!!
ismael@PC-ICA:~$ ping uno.blogspot.com
ping: invalid option – u
Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]
[-p pattern] [-s packetsize] [-t ttl] [-I interface or address]
[-M mtu discovery hint] [-S sndbuf]
[ -T timestamp option ] [ -Q tos ] [hop1 ...] destination
ismael@PC-ICA:~$ ping "uno.blogspot.com"
ping: invalid option – u
Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]
[-p pattern] [-s packetsize] [-t ttl] [-I interface or address]
[-M mtu discovery hint] [-S sndbuf]
[ -T timestamp option ] [ -Q tos ] [hop1 ...] destination
ismael@PC-ICA:~$ ping '-uno-.blogspot.com'
ping: invalid option – u
Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]
[-p pattern] [-s packetsize] [-t ttl] [-I interface or address]
[-M mtu discovery hint] [-S sndbuf]
[ -T timestamp option ] [ -Q tos ] [hop1 ...] destination
Puede que los navegadores antes de acceder a la página le mandan un ping para saber si están en linea. O que intentan resolver la ip y no pueden (como apuntó #23)

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