After running yum update on Centos 6.6 i am getting network issues with DNS/IPV6
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Hi
I run yum update on Centos 6.6 and it just update some system files and install a new kernel but i didn't reboot and after that i have many issues with my network dns/ipv6
Even yum update is not working:
[root@server ~]# yum update
Loaded plugins: downloadonly, fastestmirror, priorities
Setting up Update Process
Determining fastest mirrors
Could not retrieve mirrorlist [login to view URL] error was
14: PYCURL ERROR 6 - "Couldn't resolve host '[login to view URL]'"
Error: Cannot find a valid baseurl for repo: base
Even if i add this on my hosts that i can ping the ip:
[login to view URL] [login to view URL]
Also if i use wget and a link to file is not working but if i use wget -4 and the same file link is working!!!
Also checking some system settings i found some new entries related to ipv6 that i remove:
hosts file:
::1 localhost [login to view URL] localhost6 [login to view URL]
and on nameservers i got a line:
search [login to view URL]
Some other info also:
/etc/hosts:
[login to view URL] localhost [login to view URL]
[login to view URL] [login to view URL] server
/etc/sysconfig/network:
NETWORKING=yes
HOSTNAME=[login to view URL]
GATEWAY=[login to view URL]
/etc/[login to view URL]
# Generated by NetworkManager
nameserver 8.8.8.8
And then reboot the server but nothing
also i have this:
/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="static"
DNS1="8.8.8.8"
GATEWAY="37.187.xxx.254"
HWADDR="0C:C4:7A:02:CA:xx"
IPADDR="[login to view URL]"
NETMASK="[login to view URL]"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
UUID="cb7ea12f-2ab7-45a1-896f-8ff948d7xxxx"
and this:
/etc/[login to view URL]
passwd: files
shadow: files
group: files
#hosts: db files nisplus nis dns
hosts: files dns
bootparams: nisplus [NOTFOUND=return] files
ethers: files
netmasks: files
networks: files
protocols: files
rpc: files
services: files
netgroup: nisplus
publickey: nisplus
automount: files nisplus
aliases: files nisplus
[root@server ~]# nslookup [login to view URL]
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
Name: [login to view URL]
Address: [login to view URL]
and:
dig @8.8.8.8 Google
[root@server ~]# dig @8.8.8.8 Google
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.1 <<>> @8.8.8.8 Google
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
and:
[root@server ~]# ping6 [login to view URL]
PING [login to view URL](2001:4178:2:1269::fed2) 56 data bytes
From fe80::2ff:ffff:feff:fffe icmp_seq=25 Destination unreachable: Beyond scope of source address
[root@server ~]# lsmod | grep ipv6
nf_conntrack_ipv6 8337 67
nf_defrag_ipv6 27236 1 nf_conntrack_ipv6
nf_conntrack 80390 8 nf_conntrack_ipv6,xt_state,nf_nat_ftp,iptable_nat,nf_nat,nf_conntrack_ipv4,xt_conntrack,nf_conntrack_ftp
ipv6 334740 42 nf_conntrack_ipv6,nf_defrag_ipv6
So i need someone that knows how to fix this ...
Hi
I can fix it
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