How to properly create IPv4 from bytes?

[bagrel]

X = IPv4() X.from_bytes(some_byte)

when running the pseudocode above, the ‘opt’ for IPv4Options isn’t decoded.

Even when doing a reverse encoding like: `X = IPv4()

fill up X

X[‘opt’].set_val(some_IPv4OptionByteBuf) Y=IPv4() Y.from_bytes(X.to_bytes())` Y will return the same IP header info but will lose the IPv4 bytes

[p1-bmu]

IPv4 decoding is working (at least) for me:

In [1]: from pycrate_ether.IP import *; from binascii import *

In [2]: p = IPv4()

In [3]: p.from_bytes(unhexlify('4f00007c000040004001fd307f0000017f00000186280000000101220001ae0000000000000000000000000000000000000000000000000000000001'))

In [4]: show(p)
### IPv4 ###
 <vers : 4>
 <hdr_wlen : 15>
 <precedence : 0 (Routine)>
 <delay : 0 (Normal)>
 <throughput : 0 (Normal)>
 <DSC : 0 (Normal)>
 <ECN : 0b00>
 <len : 124>
 <id : 0>
 <res_2 : 0b0>
 <DF : 1 (do not fragment)>
 <MF : 0 (last fragment)>
 <frag_off : 0>
 <TTL : 64>
 <proto : 1 (ICMP)>
 <hdr_cs : 0xfd30>
 <src : 0x7f000001>
 <dst : 0x7f000001>
 ### opt ###
  ### opts ###
   ### IPv4Option ###
    <CCN : 134 (CommercialSecurity)>
    <len : 40>
    <val : 0x0000000101220001ae0000000000000000000000000000000000000000000000000000000001>
  <pad : b''>

Please provide your full code extract, and all required information regarding your environment if you want me to help.