Best way to convert RHEL 7.4 ifconfig -a dump to RHEL 6.3

Hi,

we have a script which uses ifconfig -a dump, parses it & gets required data. Now in RHEL 7.4 the ifconfig -a dump is changed as compared to RHEL 6.3 .

Now i need way to convert this dump back to the way it looks in RHEL 6.4 . So what is the best way to do it?

sample dump :
In RHEL 6

eth0 Link encap:Ethernet HWaddr 00:11:3F:CD:EB:3D inet addr:10.0.33.1 Bcast:10.0.47.255 Mask:255.255.240.0 inet6 addr: fe80::211:3fff:fecd:eb3d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:15633722 errors:0 dropped:0 overruns:0 frame:0 TX packets:13595597 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1645440580 (1.5 GiB) TX bytes:1201742677 (1.1 GiB) Memory:fba80000-fbb00000

In RHEL 7

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.16.225.17 netmask 255.255.240.0 broadcast 172.16.239.255 inet6 fe80::211:3fff:feee:8b5f prefixlen 64 scopeid 0x20<link> ether 00:11:3f:ee:8b:5f txqueuelen 1000 (Ethernet) RX packets 281784 bytes 66708264 (63.6 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 56 bytes 2664 (2.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device memory 0xfbd80000-fbdfffff

You are the only person that knows what data you are interested in.
Adapt the script to handle either as input.