I already posted in serverfault, but was closed due off-topic:
At this point I can't connect to internet from my RPi. I ask this question here and not in raspberrypi.stackexchange.com because this problem is about networking and not about the device.
To resume:
I did the following steps: http://forums.opensuse.org/english/get-technical-help-here/network-internet/454678-how-create-network-bridge-2.html#post2295540
Then, I could connect to my RPi via SSH, but I was unable to ping or resolve to google.com, so I did some steps for IP Masquerading:
http://www.ibiblio.org/pub/linux/docs/HOWTO/other-formats/html_single/Masquerading-Simple-HOWTO.html
Now I can ping from my RPi to my PC and from my PC to RPi, but from my RPi to Google.com it just resolve but doesn't receive any packets from ping:
PING www.google.com (187.141.135.216) 56(84) bytes of data. ^C
--- www.google.com ping statistics
--- 9 packets transmitted, 0 received, 100% packet loss, time 8000ms
I don't know what I'm missing to do.
These are my iptables rules in my PC:
sudo /usr/sbin/iptables -t nat -L
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination