It looks like the header line is missing here. The debugfs table show something like:

"  Originator      last-seen (#/255)           Nexthop [outgoingIF]:   Potential nexthops ...\n");

or

"  Originator      last-seen ( throughput)           Nexthop [outgoingIF]:   Potential nexthops ...\n");

Ah, yes. I wanted to come back and look at this. It needs an extra call to ask what algorithm is being used, so you know which header to print.

the nexthops are also done differently now (not sure if this is better but at least something which should be discussed):

I've deliberately not made the output the same as the kernel debugfs. There is no real reason to do that. You should not be 'screen scraping' batctl, you should use the netlink socket...

Anything where the kernel consolidates information does not happen. We get the raw information from the kernel, and it is printed as is, with the exception that bathosts is used to translate MAC addresses to names. There are also likely to be white space changes.

The callback structure used by netlink does not help here. You get to see one originator record at once. So in order to print consolidated information, you would have to build a database in the callback function, and once all the information is available, do the consolidate and then printing. Doable, but i took the easier option of printing a line per originator record.

originator

netlink

[B.A.T.M.A.N. adv 2016.1-62-g55e9890, MainIF/MAC: eth0/02:ba:de:af:fe:01 (bat0/f2:f2:2d:c3:71:8c BATMAN_IV)]
 * 02:ba:de:af:fe:02    0.004s   (251) 02:ba:de:af:fe:02 [      eth0]

debugfs

[B.A.T.M.A.N. adv 2016.1-62-g55e9890, MainIF/MAC: eth0/02:ba:de:af:fe:01 (bat0 BATMAN_IV)]
  Originator      last-seen (#/255)           Nexthop [outgoingIF]:   Potential nexthops ...
02:ba:de:af:fe:02    0.024s   (251) 02:ba:de:af:fe:02 [      eth0]: 02:ba:de:af:fe:02 (251)

The output "No batman nodes in range ...\n" also isn't there anymore (not that I would miss it).

Again, the callback structure makes that messy. A global variable which needs setting in the callback, and after parsing all the records, if that global variable is not set, print the "No batman nodes in range ...\n"

Andrew