'/%s' % prefix_bit_len It returns an address with extra leading zeros when prefix_bit_len is non-zero. For example, an original IP prefix a::/96 will turn out to be 0:0: a::/96, because the parsernetaddr.IPAddress` does not know there are some zeros masked, it will put the missing zeros at the start of the IP address, causing this issue.
One possible correction is ``prefix_addr = str(netaddr.IPAddress(int(binascii.b2a_hex(nlri_data[1:offset]), 16)<<(full_length-prefix_bit_len))) \
'/%s' % prefix_bit_len`` where full_length is 32 for ipv4 and 128 for ipv6.
In file: https://github.com/smartbgp/yabgp/blob/master/yabgp/message/attribute/nlri/ipv6_unicast.py line 45: `prefix_addr = str(netaddr.IPAddress(int(binascii.b2a_hex(nlri_data[1:offset]), 16))) \
It returns an address with extra leading zeros when prefix_bit_len is non-zero. For example, an original IP prefix a::/96 will turn out to be 0:0: a::/96, because the parsernetaddr.IPAddress` does not know there are some zeros masked, it will put the missing zeros at the start of the IP address, causing this issue. One possible correction is ``prefix_addr = str(netaddr.IPAddress(int(binascii.b2a_hex(nlri_data[1:offset]), 16)<<(full_length-prefix_bit_len))) \