minor bugfix in protocols

Author: JarryShaw

pcapkit/protocols/misc/pcapng.py

@@ -154,7 +154,6 @@
 from pcapkit.protocols.schema.misc.pcapng import NS_DNSIP4AddrOption as Schema_NS_DNSIP4AddrOption
 from pcapkit.protocols.schema.misc.pcapng import NS_DNSIP6AddrOption as Schema_NS_DNSIP6AddrOption
 from pcapkit.protocols.schema.misc.pcapng import NS_DNSNameOption as Schema_NS_DNSNameOption
-from pcapkit.protocols.schema.misc.pcapng import Option as Schema_Option
 from pcapkit.protocols.schema.misc.pcapng import PACK_FlagsOption as Schema_PACK_FlagsOption
 from pcapkit.protocols.schema.misc.pcapng import PACK_HashOption as Schema_PACK_HashOption
 from pcapkit.protocols.schema.misc.pcapng import PacketBlock as Schema_PacketBlock
@@ -190,6 +189,7 @@
     from typing_extensions import Literal
 
     from pcapkit.foundation.engines.pcapng import Context
+    from pcapkit.protocols.schema.misc.pcapng import Option as Schema_Option
     from pcapkit.protocols.schema.schema import Schema
 
     Packet = Union[Data_EnhancedPacketBlock, Data_SimplePacketBlock, Data_PacketBlock]

pcapkit/protocols/schema/internet/hopopt.py

@@ -269,7 +269,7 @@ class PadOption(Option):
     """Header schema for HOPOPT padding options."""
 
     #: Padding.
-    pad: 'bytes' = PaddingField(length=lambda pkt: pkt['len'])
+    pad: 'bytes' = PaddingField(length=lambda pkt: pkt.get('len', 0))
 
     if TYPE_CHECKING:
         def __init__(self, type: 'Enum_Option', len: 'int') -> 'None': ...

pcapkit/protocols/schema/internet/ipv6_opts.py

@@ -269,7 +269,7 @@ class PadOption(Option):
     """Header schema for IPv6-Opts padding options."""
 
     #: Padding.
-    pad: 'bytes' = PaddingField(length=lambda pkt: pkt['len'])
+    pad: 'bytes' = PaddingField(length=lambda pkt: pkt.get('len', 0))
 
     if TYPE_CHECKING:
         def __init__(self, type: 'Enum_Option', len: 'int') -> 'None': ...