diff --git a/lib/SNMP/Info/EtherLike.pm b/lib/SNMP/Info/EtherLike.pm
index 7146f1a8..14dfc166 100644
--- a/lib/SNMP/Info/EtherLike.pm
+++ b/lib/SNMP/Info/EtherLike.pm
@@ -68,7 +68,6 @@ $VERSION = '3.53';
     'el_xmit_defer'      => 'dot3StatsDeferredTransmissions',
 
     # Ethernet-like Collision Statistics Group
-    'el_coll_count' => 'dot3CollCount',
     'el_coll_freq'  => 'dot3CollFrequencies'
 );
 
diff --git a/lib/SNMP/Info/IPv6.pm b/lib/SNMP/Info/IPv6.pm
index da3a0e2d..51196b1e 100644
--- a/lib/SNMP/Info/IPv6.pm
+++ b/lib/SNMP/Info/IPv6.pm
@@ -67,7 +67,7 @@ $VERSION = '3.53';
 
     'ip_n2p_phys_state' => 'ipNetToPhysicalState',          # IP-MIB
     'c_inet_phys_state' => 'cInetNetToMediaState',          # CISCO-IETF-IP-MIB
-    'i6_n2p_phys_state' => 'ipv6NetToMediaState',           # IPV6-MIB
+    'i6_n2p_phys_state' => 'ipv6IfNetToMediaState',         # IPV6-MIB
 
     'ip_pfx_origin'     => 'ipAddressPrefixOrigin',         # IP-MIB
     'c_pfx_origin'      => 'cIpAddressPfxOrigin',           # CISCO-IETF-IP-MIB 
@@ -75,8 +75,9 @@ $VERSION = '3.53';
     'ip_addr6_pfx'      => 'ipAddressPrefix',               # IP-MIB
     'c_addr6_pfx'       => 'cIpAddressPrefix',              # CISCO-IETF-IP-MIB 
 
-    'ip_addr6_pfxlen'   => 'ipAddressPrefixLength',         # IP-MIB
-    'c_addr6_pfxlen'    => 'cIpAddressPfxLength',           # CISCO-IETF-IP-MIB
+    # Commented out are not-accessible according to MIB
+    #'ip_addr6_pfxlen'   => 'ipAddressPrefixLength',        # IP-MIB
+    #'c_addr6_pfxlen'    => 'cIpAddressPfxLength',          # CISCO-IETF-IP-MIB
     'i6_addr_pfxlen'    => 'ipv6AddrPfxLength',             # IPV6-MIB
 
     'ip_addr6_index'    => 'ipAddressIfIndex',              # IP-MIB