VLAN membership of high ifIndex Ports

Ports with an ifIndex higher than 128 are not updated within the vlan module. The problem is, that /usr/bin/snmpbulkwalk retrieves:
dot1qVlanStaticEgressPorts.237 = "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 "

but snmpwalk_cache_oid explodes by \n so in the array from snmpwalk_cache_oid is:
[237][dot1qVlanStaticEgressPorts] => 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

don't know how to fix this but some time ago, it was correctly implemented...