On 06/27/16 08:51, Sam Varshavchik wrote:
> Not sure if this is known changed behavior in F24, but:
>
> For the longest time I had /etc/sysconfig/network-scripts/eno2 specify:
>
> TYPE=Ethernet
> BOOTPROTO=none
> DEFROUTE=yes
> IPV4_FAILURE_FATAL=no
> IPV6INIT=yes
> IPV6_AUTOCONF=yes
> IPV6_DEFROUTE=yes
> IPV6_FAILURE_FATAL=no
> NAME=wan0
> UUID=71e6ac4b-c693-4c20-aa0d-e1a63b7373fe
> ONBOOT=yes
> IPADDR1=216.254.115.102
> PREFIX1=24
> IPADDR2=216.27.136.223
> PREFIX2=24
> HWADDR=0C:C4:7A:32:C1:83
> IPADDR=216.254.115.190
> GATEWAY=216.254.115.1
> PREFIX=24
> IPV6_PEERDNS=yes
> IPV6_PEERROUTES=yes
>
> This host has three IP addresses, and up until now the default IP address for outgoing
> IP traffic was always 216.254.115.190, specified by IPADDR.
>
> It appears that, right now, all of my outbound traffic now appears to come from one of
> the other IP addresses, 216.254.115.102.
Maybe try reordering what is in your /etc/sysconfig/network-scripts/eno2 file?
Currently IPADDR=216.254.115.190 is last. Maybe move it, and associated parameters, above
IPADDR1?
Just a shot in the dark....
>
> This is true even if the outgoing socket explicitly binds to 216.254.115.190:
>
> Sending mail to gmail, with an explicit bind(), strace shows:
>
> 13232 bind(5, {sa_family=AF_INET6, sin6_port=htons(0), inet_pton(AF_INET6,
> "::ffff:216.254.115.190", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = 0
> 13232 fcntl(5, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
> 13232 getsockopt(5, SOL_SOCKET, SO_TYPE, [1], [4]) = 0
> 13232 connect(5, {sa_family=AF_INET6, sin6_port=htons(25), inet_pton(AF_INET6,
> "::ffff:173.194.206.26", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1
> EINPROGRESS (Operation now in progress)
> 13232 select(6, NULL, [5], NULL, {60, 0}) = 1 (out [5], left {59, 975901})
> 13232 getsockopt(5, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
> 13232 getsockname(5, {sa_family=AF_INET6, sin6_port=htons(41394), inet_pton(AF_INET6,
> "::ffff:216.254.115.190", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, [28]) = 0
> 13232 select(6, [5], [], NULL, {300, 0}) = 1 (in [5], left {299, 975360})
> 13232 read(5, "220 mx.google.com ESMTP 92si8123707qkx.29 - gsmtp\r\n", 512) = 51
>
> Gmail still shows 216.254.115.102 as the received-from IP address. I note that
> getsockname() insists that the socket is 216.254.115.190
>
> This host is using masquerading, with firewalld. I suspect that this is firewalld's doing.
>
> ip addr's output:
>
> 2: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen
> 1000
> link/ether 0c:c4:7a:32:c1:83 brd ff:ff:ff:ff:ff:ff
> inet 216.27.136.223/24 brd 216.27.136.255 scope global eno2
> valid_lft forever preferred_lft forever
> inet 216.254.115.102/24 brd 216.254.115.255 scope global eno2
> valid_lft forever preferred_lft forever
> inet 216.254.115.190/24 brd 216.254.115.255 scope global secondary eno2
> valid_lft forever preferred_lft forever
> inet6 fe80::ec4:7aff:fe32:c183/64 scope link
> valid_lft forever preferred_lft forever
>
> Anyone knows what could be the reason for this, I'd like to have 216.254.115.190 as the
> default externally-visible IP address.
>
>
>
>
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--
You're Welcome Zachary Quinto
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