[PATCH] module-setup: Choose the first matched gateway in kdump_static_ip

[Minfei Huang]

The system may have multiple default route entry. Following is an
example to show the details.

 # ip -6 route list dev eth0
2620:52:0:1040::/64  proto kernel  metric 256  expires 2591978sec fe80::/64  proto kernel 
metric 256
default via fe80:52:0:1040::1  proto ra  metric 1024  expires 1778sec hoplimit 64
default via fe80:52:0:1040::2  proto ra  metric 1024  expires 1778sec hoplimit 64

Choose the first matched entry.

Signed-off-by: Minfei Huang <mhuang(a)redhat.com&gt;
---
 dracut-module-setup.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
index c37f7c0..a615124 100755
--- a/dracut-module-setup.sh
+++ b/dracut-module-setup.sh
@@ -99,7 +99,8 @@ kdump_static_ip() {
     fi
 
     if [ -n "$_ipaddr" ]; then
-        _gateway=$(ip $_ipv6_flag route list dev $_netdev | awk '/^default /{print
$3}')
+        _gateway=$(ip $_ipv6_flag route list dev $_netdev | \
+                awk '/^default /{print $3}' | head -n 1)
 
         if [ "x" !=  "x"$_ipv6_flag ]; then
             # _ipaddr="2002::56ff:feb6:56d5/64", _netmask is the number after
"/"
-- 
2.1.0

[Baoquan He]

ACK

On 08/07/15 at 04:40pm, Minfei Huang wrote:
>  The system may have multiple default route entry. Following is an
>  example to show the details.
>  
>   # ip -6 route list dev eth0
>  2620:52:0:1040::/64  proto kernel  metric 256  expires 2591978sec fe80::/64  proto kernel
>  metric 256
>  default via fe80:52:0:1040::1  proto ra  metric 1024  expires 1778sec hoplimit 64
>  default via fe80:52:0:1040::2  proto ra  metric 1024  expires 1778sec hoplimit 64
>  
>  Choose the first matched entry.
>  
>  Signed-off-by: Minfei Huang <mhuang(a)redhat.com&gt;
>  ---
>   dracut-module-setup.sh | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>  
>  diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
>  index c37f7c0..a615124 100755
>  --- a/dracut-module-setup.sh
>  +++ b/dracut-module-setup.sh
>  @@ -99,7 +99,8 @@ kdump_static_ip() {
>       fi
>   
>       if [ -n "$_ipaddr" ]; then
>  -        _gateway=$(ip $_ipv6_flag route list dev $_netdev | awk '/^default /{print
> $3}')
>  +        _gateway=$(ip $_ipv6_flag route list dev $_netdev | \
>  +                awk '/^default /{print $3}' | head -n 1)
>   
>           if [ "x" !=  "x"$_ipv6_flag ]; then
>               # _ipaddr="2002::56ff:feb6:56d5/64", _netmask is the number after
> "/"
>  -- 
>  2.1.0
>  
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