How to configure ipv4 Link-Local on Linux with systemd-networkd without violating RFC3927 specifications?
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I'm using an embedded device with Linux 4.9 and systemd.
I configured systemd-networkd in this way:
[Match]
Name=eth0
[Network]
DHCP=v4
[DHCPv4]
UseHostname=false
How can I setup Link-Local only when my device doesn't receive an IP address?
I know that I can use something like mdns, avahi and so on, but I'm trying to talk about this topic in a general way, to understand the logic and all possible alternatives.
PS: If required, I can replace also systemd-networkd with something else. I'm searching for the best option RFC3927-compliant.
systemd dhcp systemd-networkd avahi mdns
edited 2 days ago
Rui F Ribeiro
38.5k1479128
asked 2 days ago
Stefano Cappa
111
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Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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up vote
2
down vote
favorite
I'm using an embedded device with Linux 4.9 and systemd.
I configured systemd-networkd in this way:
[Match]
Name=eth0
[Network]
DHCP=v4
[DHCPv4]
UseHostname=false
How can I setup Link-Local only when my device doesn't receive an IP address?
I know that I can use something like mdns, avahi and so on, but I'm trying to talk about this topic in a general way, to understand the logic and all possible alternatives.
PS: If required, I can replace also systemd-networkd with something else. I'm searching for the best option RFC3927-compliant.
systemd dhcp systemd-networkd avahi mdns
edited 2 days ago
Rui F Ribeiro
38.5k1479128
asked 2 days ago
Stefano Cappa
111
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is it actually necessary for the interface to not have a Link-Local IPv4 address when it receives another address? Or in other words, have you tried just enabling the Link-Local address setup always, regardless of whether or not the DHCP will be successful?
– telcoM
2 days ago
1
Yes I tried to enable LinkLocal and it's working, however I have to pass a certification procedure and requirements say that I need a Link Local address only after some second of delay (60000 ms). Also, RFC3927 specify behaviour about conflicts and so on.
– Stefano Cappa
2 days ago
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I'm using an embedded device with Linux 4.9 and systemd.
I configured systemd-networkd in this way:
[Match]
Name=eth0
[Network]
DHCP=v4
[DHCPv4]
UseHostname=false
How can I setup Link-Local only when my device doesn't receive an IP address?
I know that I can use something like mdns, avahi and so on, but I'm trying to talk about this topic in a general way, to understand the logic and all possible alternatives.
PS: If required, I can replace also systemd-networkd with something else. I'm searching for the best option RFC3927-compliant.
systemd dhcp systemd-networkd avahi mdns
edited 2 days ago
Rui F Ribeiro
38.5k1479128
asked 2 days ago
Stefano Cappa
111
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm using an embedded device with Linux 4.9 and systemd.
I configured systemd-networkd in this way:
[Match]
Name=eth0
[Network]
DHCP=v4
[DHCPv4]
UseHostname=false
How can I setup Link-Local only when my device doesn't receive an IP address?
I know that I can use something like mdns, avahi and so on, but I'm trying to talk about this topic in a general way, to understand the logic and all possible alternatives.
PS: If required, I can replace also systemd-networkd with something else. I'm searching for the best option RFC3927-compliant.
systemd dhcp systemd-networkd avahi mdns
systemd dhcp systemd-networkd avahi mdns
edited 2 days ago
Rui F Ribeiro
38.5k1479128
asked 2 days ago
Stefano Cappa
111
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 days ago
Rui F Ribeiro
38.5k1479128
asked 2 days ago
Stefano Cappa
111
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 days ago
Rui F Ribeiro
38.5k1479128
edited 2 days ago
Rui F Ribeiro
38.5k1479128
edited 2 days ago
Rui F Ribeiro
38.5k1479128
38.5k1479128
asked 2 days ago
Stefano Cappa
111
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 days ago
Stefano Cappa
111
asked 2 days ago
Stefano Cappa
111
111
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Stefano Cappa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is it actually necessary for the interface to not have a Link-Local IPv4 address when it receives another address? Or in other words, have you tried just enabling the Link-Local address setup always, regardless of whether or not the DHCP will be successful?
– telcoM
2 days ago
1
Yes I tried to enable LinkLocal and it's working, however I have to pass a certification procedure and requirements say that I need a Link Local address only after some second of delay (60000 ms). Also, RFC3927 specify behaviour about conflicts and so on.
– Stefano Cappa
2 days ago
add a comment |
Is it actually necessary for the interface to not have a Link-Local IPv4 address when it receives another address? Or in other words, have you tried just enabling the Link-Local address setup always, regardless of whether or not the DHCP will be successful?
– telcoM
2 days ago
1
Yes I tried to enable LinkLocal and it's working, however I have to pass a certification procedure and requirements say that I need a Link Local address only after some second of delay (60000 ms). Also, RFC3927 specify behaviour about conflicts and so on.
– Stefano Cappa
2 days ago
Is it actually necessary for the interface to not have a Link-Local IPv4 address when it receives another address? Or in other words, have you tried just enabling the Link-Local address setup always, regardless of whether or not the DHCP will be successful?
– telcoM
2 days ago
Is it actually necessary for the interface to not have a Link-Local IPv4 address when it receives another address? Or in other words, have you tried just enabling the Link-Local address setup always, regardless of whether or not the DHCP will be successful?
– telcoM
2 days ago
1
1
Yes I tried to enable LinkLocal and it's working, however I have to pass a certification procedure and requirements say that I need a Link Local address only after some second of delay (60000 ms). Also, RFC3927 specify behaviour about conflicts and so on.
– Stefano Cappa
2 days ago
Yes I tried to enable LinkLocal and it's working, however I have to pass a certification procedure and requirements say that I need a Link Local address only after some second of delay (60000 ms). Also, RFC3927 specify behaviour about conflicts and so on.
– Stefano Cappa
2 days ago
add a comment |
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Is it actually necessary for the interface to not have a Link-Local IPv4 address when it receives another address? Or in other words, have you tried just enabling the Link-Local address setup always, regardless of whether or not the DHCP will be successful?
– telcoM
2 days ago
1
Yes I tried to enable LinkLocal and it's working, however I have to pass a certification procedure and requirements say that I need a Link Local address only after some second of delay (60000 ms). Also, RFC3927 specify behaviour about conflicts and so on.
– Stefano Cappa
2 days ago